104156621255 has 4 divisors (see below), whose sum is σ = 124987945512. Its totient is φ = 83325297000.

The previous prime is 104156621251. The next prime is 104156621287. The reversal of 104156621255 is 552126651401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 552126651401 = 13 ⋅42471280877.

It is not a de Polignac number, because 104156621255 - 2² = 104156621251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104156621251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10415662121 + ... + 10415662130.

It is an arithmetic number, because the mean of its divisors is an integer number (31246986378).

Almost surely, 2^104156621255 is an apocalyptic number.

104156621255 is a deficient number, since it is larger than the sum of its proper divisors (20831324257).

104156621255 is an equidigital number, since it uses as much as digits as its factorization.

104156621255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20831324256.

The product of its (nonzero) digits is 72000, while the sum is 38.

The spelling of 104156621255 in words is "one hundred four billion, one hundred fifty-six million, six hundred twenty-one thousand, two hundred fifty-five".